*{
	margin: 0;
	padding: 0;
}

#top_div{
	width: 1080px;
	height: 80px;
	margin: auto;
	
}
#top_div>ul{
	list-style: none;
	float: right;
	
}
#top_div>ul>li{
	line-height: 80px;
	margin: auto 10px;
	float: right;
}
#head_menu{
	background-color: black;
	width: 100%;
	height: 52px;
	color: #333;

}
#head_menu_body{
	margin: auto;
	background-color: black;
	width: 1080px;
	height: 52px;
	color: #999;
	
	font-size: 16px;
	line-height: 52px;
	font-family: "microsoft yahei";
}
#head_menu_body>ul>li{
	list-style: none;
	color: #999;
	float: left;
	width: 140px;
}
#head_menu_body a{

	list-style: none;

	color: #999;
	margin: 0px,20px;
	font-size: 16px;
	line-height: 52px;
	margin:0px 20px;
	font-family: "microsoft yahei";

}
#head_menu_body a:hover{
   cursor: pointer;
	color: #fff;
}
.second_memu{
	clear: both;
	float: none;
	display: block;
	list-style: none;
	margin-right: 30px;
	display: none;
	background-color:#000000 ;
	position: absolute;
	z-index: 1;
	
}
li>#rihan:hover+.rihan{
	display: block;
}
li>#oumei:hover+.oumei{
	display: block;
}
li>#guochan:hover+.guochan{
	display: block;
}

.jrituijian td{
	border-left: white 15px solid;
	border-right:white  15px solid;
}
#liaotiantankuang{
	border:2px solid #EBA142;
	background-color:lightgray;
	color: gold;
	width: 270px;
	height: 150px;
	position: absolute;
	left: 10px;
	top: 700px;
	z-index: 2;
	border-radius: 10px;
	display: none;
	
}
#form_div{
	background-color:lightgray;
	width: 600px;
	height: 1000px;
	margin: auto;
	text-align: center;
}
#form_div table{
	width: 600px;
	height: 1000px;
	text-align: center;
}
#registtable_head{
	font-size: 30px;
}
span{
	color: red;
	font-size: 15px;
}
select{
	width: 80px;
	height: 30px;
}